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HP LaserJet 4100 printer series service manual

C8049A Service Manual View Service Manual

Table of Contents

Printer description
Chapter contents
Printer features
Product compatibility matrix
Model and serial numbers
Site requirements
Installation requirements
Environmental requirements
Print media specifications
Supported types of print media
Types of print media to avoid
Weight equivalence table
Adhesive labels
Overhead transparencies
Card stock and heavy paper
Safety information
Toner safety
Laser safety
Regulatory information
Service approach
Chapter contents
Parts and supplies
Service approach
Ordering information
Printer documentation
Exchange program
HP direct ordering for genuine HP parts
HP service parts information compact disc
World Wide Web
HP support assistant compact disc
Toner cartridge information
Warranty statement
Limited warranty for toner cartridge life
Printer warranty
Printer operation
Chapter contents
Using the control panel
Control panel layout
Control panel lights
Control panel keys
Settings and defaults
Control panel menus
Quick copy jobs menu
Private/stored jobs menu
Information menu
Paper-handling menu
Printing menu
Print quality menu
Configuration menu
I/O menu
EIO menu (networked printers)
Resets menu
Service mode
Service menu
Cold reset paper
Maintenance count
Maintenance interval
Page count
Serial number
Testing the printer
Clear event log
Engine test
Top margin
Tray 1 left margin
Trays 2 and 3 left margin
Resetting the printer
Clearing NVRAM
Cold reset
Initialization of NVRAM
System configuration
Initialization of the hard disk
MS-DOS system configuration
Parallel DOS commands
Printer maintenance
Chapter contents
Cleaning the printer and accessories
Using the auto-cleaning page
Using the printer cleaning page
Cleaning spilled toner
Performing printer maintenance
Reset maintenance count
Expected life of components
Theory of operation
Chapter contents
Power supply system
AC/DC power distribution
Fuser over-temperature protection
Overcurrent/overvoltage protection
High-voltage power distribution
Cartridge memory
Toner-cartridge detection
Engine controller system
Engine controller board inputs and outputs
Engine test print
Laser/scanner drive
Paper-motion monitoring and control
Solenoids, sensors, clutches, and switches
Formatter system
Resolution Enhancement technology
DIMM slots
Printer memory
Control panel
PJL overview
Image formation system
Toner cartridge
Photosensitive drum
Writing the image
Developing the image
Transferring the image
Image fusing/variable fusing temperature
Paper feed system
Clutches and sensors
Printing from tray 1
Printing from tray 2
Printing from the optional 500-sheet tray
Envelope feeder
Other controls
Environmental detection
Basic sequence of operation
Removing and replacing parts
Chapter contents
Removal and replacement strategy
Required tools
Other helpful tools
Removing covers
Rear right side cover
Control panel
Top cover
Left side cover
Front right side cover
Rear cover/rear output bin
Tray 1
Removing internal assemblies
Firmware DIMM
Formatter assembly
Output delivery assembly
Cartridge memory
Main motor
Transfer roller
Tray 1 pickup roller
Tray 1 pickup assembly
Right side toner cartridge guide
Registration assembly
Paper feed assembly
Printer drive assembly (gear train)
Delivery drive assembly
Separating the engine module from the paper-feed module
Engine controller board
Paper-feed guide assembly
Removing tray assemblies
Paper-feed rollers for trays 2, 3, and 4
Separation rollers for trays 2, 3, and 4
Tray 2 paper-feed module disassembly
Tray 3 and 4 paper-feed module disassembly
Chapter contents
Troubleshooting process
Troubleshooting flowchart
Troubleshooting flowchart (continued)
Troubleshooting the printing system
Preliminary operating checks
Power on
Engine test
Event log
Printer messages
General paper-path troubleshooting
Information pages
Image quality
Image system troubleshooting
Reference diagrams
Locations of components
Paper path
Engine controller board
Paper-size detection switches
Motors and fans
Sensors, switches, and thermistors
Solenoids and clutch
Parts and diagrams
Chapter contents
How to use the parts lists and diagrams
Accessories and supplies
Common screws and replacement cables
Illustrations and parts lists
Alphabetical parts list
Numerical parts list

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